Items tagged “cardiac”
42 results found
Shmoo sign refers to the appearance of a prominent, rounded left ventricle and dilated aorta on a plain AP chest radiograph giving the appearance of Shmoo, a fictional cartoon character in the comic strip Li'l Abner in the 1940s. This sign is indicative of left ventricular enlargement.
Innervation of the heart
The heart has extrinsic and intrinsic innervation, which allows the heart to continue beating if the nerve supply to the heart is disrupted (e.g. in cardiac transplant). The heart receives innervation from both the superficial and deep cardiac plexuses, which have both parasympathetic (from vag...
Computed tomography of the heart (or cardiac CT) is routinely performed to gain knowledge about cardiac or coronary anatomy, to detect or diagnose coronary artery disease, to evaluate patency of coronary artery bypass grafts or implanted coronary stents or to evaluate volumetry and cardiac funct...
The moderator band, also called the septomarginal trabecula, is a consistent structure in the morphologic right ventricle and can be helpful as a landmark in situations where the ventricles may be ambiguous (i.e. in some forms of congenital heart disease). The term "septomarginal" is descriptiv...
Arterial switch procedure
Published 26 Oct 2014
Septal bounce is a sign of ventricular interdependence on echocardiography, cardiac CT, and cardiac MRI, manifested by reduced or paradoxical interventricular septal movement during diastole (i.e. initial septal movement towards and then away from the left ventricle) during early diastole second...
Transcather aortic valve replacement (Medtronic CoreValve)
Published 24 Oct 2014
Arterial switch procedure
The arterial switch procedure (or Jatene switch) is an intervention designed to correct D-transposition of the great arteries at the level of the aorta and main pulmonary artery. First, the left and right coronary arteries are transferred to the posterior artery (the main pulmonary artery, now ...
Left-dominant coronary circulation
Published 28 Oct 2014
Transient ischaemic dilatation
Published 29 Oct 2014
Peri-partum/post-partum cardiomyopathy is a dilated cardiomyopathy that may occur in the last trimester of pregnancy through the first several months post-partum. Pathology The pathogenesis of post-partum cardiomyopathy is uncertain, with genetic factors, sympathetic tone, hormones, and malnut...
Coronary MR angiography
Coronary MR angiography (coronary MRA) is a developing approach to imaging the coronary arteries. Advantages of coronary MRA include avoidance of the intravenous iodinated contrast and ionizing radiation used in coronary CT angiography and conventional angiography. A disadvantage of coronary M...
The Senning repair is one of two "atrial switch" procedures used to functionally correct transposition of the great arteries (the other being the Mustard repair). The two repairs share a similar fundamental principle. Systemic blood flow is redirected away from the right ventricle and toward t...
Patent foramen ovale
A patent foramen ovale (PFO) is a type of atrial septal defect in which there is channel-like communication between the atria through an unfused fossa ovale. Gross anatomy The foramen ovale in the interatrial septum normally develops into the fossa ovalis when the flaps of the atrial septa pri...
The Eustachian valve (also known as the "valve of the inferior vena cava") is a ridge of variable thickness in the inferior right atrium. It is a remnant of a fetal structure that directed incoming oxygenated blood to the foramen ovale and away from the right atrium. Incomplete regression of ...
The coronary veins return deoxygenated blood from the myocardium back to the right atrium. Most venous blood returns via the coronary sinus. Coronary venous anatomy is highly variable, but is generally comprised of 3 groups of veins: cardiac veins which drain into the coronary sinus: great car...
The coronary sinus is the major coronary vein. It returns the majority of the left ventricular blood flow to the right atrium. Gross anatomy The coronary sinus courses along the posterior wall of the left atrium into the left atrioventricular groove. It normally drains into the right atrium. T...
Cardiac lymphoma is a rare tumour of the myocardium and/or pericardium. It may be considered as primary or secondary. Epidemiology Primary cardiac lymphoma is a rare occurrence, representing only 10% of primary malignant cardiac tumours (1% of all primary cardiac tumours). Secondary involveme...
Left atrial enlargement
Left atrial enlargement may result from many conditions, either congenital or acquired. It has some characteristic findings on a frontal chest radiograph. CT or MRI may also be used for diagnosis. Pathology Broadly speaking, the causes of left atrial enlargement can be divided into congenital ...
Great cardiac vein
The great cardiac vein (GCV) runs in the anterior interventricular groove and drains the anterior aspect of the heart where it is the venous complement of the left anterior descending artery. It is the main tributary of the coronary sinus. Gross anatomy It begins on the anterior surface of th...